For every coin that has a head,  
Turn it round it will have a tail,  
Every positive thought that exists,    
A negative will make it fail;  
For every attack you can devise,  
The enemy can plan a defence,  
And there will always be two sides,  
For each and every sentence;  
Just like nothing is forever black,    
Nothing is always white, no way,  
So let us think with moderation,  
So that we can appreciate the gray.